Abstract
[structure: see text] A bimodal target-specific contrast agent based on a cyclic peptide containing the target-specific NGR sequence, gadolinium(III) diethylenetriaminepentaacetic acid (Gd(III)DTPA), and Oregon Green 488 (OG488) suitable for both MR imaging and optical imaging of angiogenesis is developed. The synthetic strategy for this target-specific contrast agent exploits the use of highly efficient, chemoselective reactions, such as native chemical ligation, and gives a straightforward approach for double labeling of peptides in general.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Carboxylic Acids / chemistry*
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Contrast Media / chemical synthesis*
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Contrast Media / chemistry
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Gadolinium DTPA / chemical synthesis
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Gadolinium DTPA / chemistry*
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Magnetic Resonance Imaging / methods*
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Molecular Structure
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Neovascularization, Pathologic / diagnosis*
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Peptides, Cyclic / chemistry*
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Sensitivity and Specificity
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Spectrometry, Mass, Electrospray Ionization / methods
Substances
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Carboxylic Acids
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Contrast Media
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Oregon Green 488 carboxylic acid
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Peptides, Cyclic
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Gadolinium DTPA